CVE-2026-11793
CVE-2026-11793: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium4.9
Medium [CVE-2026-11793] stack buffer overflow in checkprefix algorithm id parsing
CVE-2026-11793Source published Source updated
A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only. Red Hat severity: Low — CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-121. Affected Red Hat products: Red Hat Directory Server 11; Red Hat Directory Server 12; Red Hat Directory Server 13; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.…
- Affected products in this advisory
- Red Hat Directory Server 11
- Red Hat Directory Server 12
- Red Hat Directory Server 13
- Red Hat Enterprise Linux 10
4 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- Restrict Directory Manager access. Monitor cn=config attributes (nsDS5ReplicaCredentials, nsDS5ReplicaBootstrapCredentials) for abnormally long values. Restrict LDAP administrative access to management networks or localhost (LDAPI).
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